The National Weather Service has issued a tornado warning for southern Marshall County until 10 a.m.

At 9:32 a.m., the weather service's Doppler radar indicated a severe thunderstorm capable of producing a tornado 18 miles southwest of Albertville and about nine miles north of Oneonta, moving northeast at 45 mph.

Locations in the path of the storm include Albertville, Douglas, Horton and Boaz.

When a tornado warning is issued, it means that strong rotation has been detected in the storm. A tornado may already be on the ground, or is expected to develop shortly, according to a statement by the weather service.

If you are in the path of the storm, move indoors and to the lowest level of the building. Stay away from windows. If you are driving, do not seek shelter under a highway overpass, the weather service statement said.